The best way to display fees is as a separate line item at checkout, with a clear and simple label. Use language your customers understand, and add a short note in the "Description" field when creating a fee, so customers see why the fee is there. You can also add an icon or image to the fee product created by the app, which will appear alongside the fee at checkout.
This approach keeps your pricing transparent and helps prevent surprises, so customers feel confident moving forward with their order.
To learn more about this, you can watch the quick video below: